Article ID: 827546
Article Last Modified on 7/24/2007
APPLIES TO
- Microsoft Windows Server 2003, Standard Edition (32-bit x86)
- Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
SYMPTOMS
The Windows Redirector may incorrectly cancel a session during a long-lasting locking operation. This problem may occur when two clients access the same file on a server, where the following conditions are true:
- "Client A" locks a file on the file server.
- "Client B" also tries to lock the same file by calling the LockFileEx (hFile,LOCKFILE_EXCLUSIVE_LOCK) function.
- The file server never returns the server message block call to client B because client A still has the file locked.
- The client B Redirector times out and disconnects the session. (The time-out period is controlled by the
Sesstimeoutregistry setting.)
CAUSE
This problem may occur if the LOCKFILE_FAIL_IMMEDIATELY flag in the LockFileEx function is not set and if the server returns the server message block only when the file has been successfully locked. If this takes longer than the client-side session time-out, the client's Redirector cancels the connection.
RESOLUTION
Hotfix Information
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.
To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:
Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:
Prerequisites
No prerequisites are required.
Restart Requirement
You must restart your computer after you apply this hotfix.
Hotfix Replacement Information
This hotfix does not replace any other hotfixes.
File Information
The English version of this hotfix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
Date Time Version Size File name Platform ------------------------------------------------------------------------------ 25-Aug-2003 20:48 5.2.3790.80 395,264 Mrxsmb.sys X86 25-Aug-2003 20:48 5.2.3790.80 157,696 Rdbss.sys X86 12-Aug-2003 18:54 271 Branches.inf X86 25-Aug-2003 22:39 10,444 Kb827546.cat X86 25-Aug-2003 22:20 354 Updatebr.inf X86 25-Aug-2003 22:20 5,170 Update_rtmqfe.inf X86 25-Aug-2003 20:49 5.2.3790.80 1,121,792 Mrxsmb.sys Ia64 25-Aug-2003 20:48 5.2.3790.80 463,360 Rdbss.sys Ia64 25-Aug-2003 22:26 5,190 Update_rtmqfe.inf Ia64
STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.
Additional query words: lock redirector rdr disconnect
Keywords: kbhotfixserver kbqfe kbbug kbfix kbqfe kbwinserv2003presp1fix KB827546
